On EC2, I increased write throughput on one table by 3X by mounting 2 additional EBS volumes to the server and partitioning the table across the three volumes.

On EC2, I increased write throughput on one table by 3X by mounting 2 additional EBS volumes to the server and partitioning the table across the three volumes. That may not be as beneficial to you though if you have many different tables that are being written to.